$main::SIG{__DIE__} = \&some_function; # when does this get run?

[download]

It gets run at the same time as any other code in the same place would. Give it a try: 

#!/usr/bin/perl

use strict;
use warnings;
use feature qw/say/;

sub function {
    say "Howdy!";
}

#die "horribly";

$main::SIG{__DIE__} = \&function;

#die "horribly";

#BEGIN { die "horribly"; }

[download]

Try uncommenting each of the various dies; only the one that dies after the signal handler has been assigned will produce a "Howdy!". No implicit blocks of any kind are involved.

Alternatively, check with -MO=Deparse.

In reply to Re^5: SIG, Modules, and Eval by AppleFritter
in thread SIG, Modules, and Eval by kbrannen

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